/*----------------------------------------------------------------------------
 * Copyright (c) <2016-2018>, <Huawei Technologies Co., Ltd>
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *---------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
 * Notice of Export Control Law
 * ===============================================
 * Huawei LiteOS may be subject to applicable export control laws and regulations, which might
 * include those applicable to Huawei LiteOS of U.S. and the country in which you are located.
 * Import, export and usage of Huawei LiteOS in any manner by you shall be in compliance with such
 * applicable export control laws and regulations.
 *---------------------------------------------------------------------------*/

#if !defined(__MQTT_LITE_OS__)
#define __MQTT_LITE_OS__

#if defined(WIN32_DLL) || defined(WIN64_DLL)
  #define DLLImport __declspec(dllimport)
  #define DLLExport __declspec(dllexport)
#elif defined(LINUX_SO)
  #define DLLImport extern
  #define DLLExport  __attribute__ ((visibility ("default")))
#else
  #define DLLImport
  #define DLLExport
#endif


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <los_typedef.h>
#include <los_sys.h>
#include "atiny_socket.h"
#include "atiny_log.h"

typedef struct Timer
{
	unsigned long long end_time;
} Timer;

void TimerInit(Timer*);
char TimerIsExpired(Timer*);
void TimerCountdownMS(Timer*, unsigned int);
void TimerCountdown(Timer*, unsigned int);
int TimerLeftMS(Timer*);

typedef enum mqtt_proto
{
    MQTT_PROTO_NONE = 0,
    MQTT_PROTO_TLS_PSK,
    MQTT_PROTO_TLS_CA,
    MQTT_PROTO_MAX
}mqtt_proto_e;

typedef struct mqtt_security_psk
{
    unsigned char *psk_id;
    int psk_id_len;
    unsigned char *psk;
    int psk_len;
}mqtt_security_psk_t;

typedef struct mqtt_security_ca
{
    char *ca_crt;
    char *server_crt;
    char *server_key;
}mqtt_security_ca_t;

typedef struct mqtt_context
{
    int fd;
}mqtt_context_t;

typedef struct Network
{
    mqtt_proto_e proto;
    void *ctx;
    int (*mqttread) (struct Network*, unsigned char*, int, int);
    int (*mqttwrite) (struct Network*, unsigned char*, int, int);
    union
    {
        mqtt_security_psk_t psk;
        mqtt_security_ca_t ca;
    };
} Network;

DLLExport void NetworkInit(Network*);
DLLExport int NetworkConnect(Network*, char*, int);
DLLExport void NetworkDisconnect(Network*);

#endif
